From: Sorcerer on

"Ka-In Yen" <yenkain(a)yahoo.com.tw> wrote in message
news:1160098594.203077.101400(a)m7g2000cwm.googlegroups.com...
|
| Eric Gisse wrote:
| > Ka-In Yen wrote:
| > > Eric Gisse wrote:
| > > > Ka-In Yen wrote:
| > > > > Physicists recall. A fault is found in their logic circuit: they
are
| > > > > ill-trained in
| > > > > 3D vector algebra.
| > > >
| > > > Says the guy who can't use the standard notation to save his life.
| > > >
| > >
| > > I will not discuss with you, unless you finish your homework first.
| > >
| > > Home work for Eric Gisse:
| > > A rectangle sits in 3D space. The area vector of the rectangle is A,
| > > and the legth vector of one side of the rectangle is L. Please find
| > > the length vector of the other side of the rectangle?
| >
| > Area isn't a vector, retard.
|
| Please refer to the following page:
|
| http://farside.ph.utexas.edu/teaching/em/lectures/node9.html

Hahahaha!
See why we call the retard "Silly Goose"?
I knew he couldn't solve it.
Another variation is sqrt((-x)^2), where the square is in the
third quadrant, not the first.
Same absolute area, but different squares.
Androcles.



Androcles


From: Eric Gisse on

Ka-In Yen wrote:
> Eric Gisse wrote:
> > Ka-In Yen wrote:
> > > Eric Gisse wrote:
> > > > Ka-In Yen wrote:
> > > > > Physicists recall. A fault is found in their logic circuit: they are
> > > > > ill-trained in
> > > > > 3D vector algebra.
> > > >
> > > > Says the guy who can't use the standard notation to save his life.
> > > >
> > >
> > > I will not discuss with you, unless you finish your homework first.
> > >
> > > Home work for Eric Gisse:
> > > A rectangle sits in 3D space. The area vector of the rectangle is A,
> > > and the legth vector of one side of the rectangle is L. Please find
> > > the length vector of the other side of the rectangle?
> >
> > Area isn't a vector, retard.
>
> Please refer to the following page:
>
> http://farside.ph.utexas.edu/teaching/em/lectures/node9.html

Irrelevant. You are not asking a vector calculus problem.

You are asking a problem that has no solution with valid mathematics
because the starting assumption is invalid.

Area is not a vector - area is a SCALAR. Area of a rectangle is defined
as the magnitude of the two vectors that form the sides of the
rectangle.

Which, unsurprisingly, IS NOT A VECTOR.

If you want me to answer a problem, reformulate it into mathematics
that is actually taught in school and used by professionals rather than
your shitty attempt at reinventing the wheel.

From: yen, ka-in on

Eric Gisse wrote:
> Ka-In Yen wrote:
> > Eric Gisse wrote:
> > > Ka-In Yen wrote:
> > > >
> > > > I will not discuss with you, unless you finish your homework first.
> > > >
> > > > Home work for Eric Gisse:
> > > > A rectangle sits in 3D space. The area vector of the rectangle is A,
> > > > and the legth vector of one side of the rectangle is L. Please find
> > > > the length vector of the other side of the rectangle?
> > >
> > > Area isn't a vector, retard.
> >
> > Please refer to the following page:
> >
> > http://farside.ph.utexas.edu/teaching/em/lectures/node9.html
>
> Irrelevant. You are not asking a vector calculus problem.
>
> You are asking a problem that has no solution with valid mathematics
> because the starting assumption is invalid.
>
> Area is not a vector - area is a SCALAR. Area of a rectangle is defined
> as the magnitude of the two vectors that form the sides of the
> rectangle.
>
> Which, unsurprisingly, IS NOT A VECTOR.

Go ask your teacher, I will not give you free e-tutoring any more.

From: The Ghost In The Machine on
In sci.math, yen, ka-in
<yenkain(a)yahoo.com.tw>
wrote
on 22 Oct 2006 17:30:40 -0700
<1161563440.010785.158430(a)i42g2000cwa.googlegroups.com>:
>
> Eric Gisse wrote:
>> Ka-In Yen wrote:
>> > Eric Gisse wrote:
>> > > Ka-In Yen wrote:
>> > > >
>> > > > I will not discuss with you, unless you finish your homework first.
>> > > >
>> > > > Home work for Eric Gisse:
>> > > > A rectangle sits in 3D space. The area vector of the rectangle is A,
>> > > > and the legth vector of one side of the rectangle is L. Please find
>> > > > the length vector of the other side of the rectangle?
>> > >
>> > > Area isn't a vector, retard.
>> >
>> > Please refer to the following page:
>> >
>> > http://farside.ph.utexas.edu/teaching/em/lectures/node9.html
>>
>> Irrelevant. You are not asking a vector calculus problem.
>>
>> You are asking a problem that has no solution with valid mathematics
>> because the starting assumption is invalid.
>>
>> Area is not a vector - area is a SCALAR. Area of a rectangle is defined
>> as the magnitude of the two vectors that form the sides of the
>> rectangle.
>>
>> Which, unsurprisingly, IS NOT A VECTOR.
>
> Go ask your teacher, I will not give you free e-tutoring any more.
>

The numeric area of a parallelogram (rectangular or
otherwise) in 3-D is in fact the norm of the cross-product
of the two adjacent sides. Therefore, area can be
construed as a vector, and in fact in many 3-D systems one
has to be very careful lest the orientation of a face be
incorrect and the face vanish.

The volume of a parallelpiped is the triple-product.

Therefore, for the question above: the length vector for
the missing side is the cross-product of A and L, divided
by the square of the norm of L.

--
#191, ewill3(a)earthlink.net
"640K ought to be enough for anybody."
- allegedly said by Bill Gates, 1981, but somebody had to make this up!

--
Posted via a free Usenet account from http://www.teranews.com

From: Eric Gisse on

yen, ka-in wrote:
> Eric Gisse wrote:
> > Ka-In Yen wrote:
> > > Eric Gisse wrote:
> > > > Ka-In Yen wrote:
> > > > >
> > > > > I will not discuss with you, unless you finish your homework first.
> > > > >
> > > > > Home work for Eric Gisse:
> > > > > A rectangle sits in 3D space. The area vector of the rectangle is A,
> > > > > and the legth vector of one side of the rectangle is L. Please find
> > > > > the length vector of the other side of the rectangle?
> > > >
> > > > Area isn't a vector, retard.
> > >
> > > Please refer to the following page:
> > >
> > > http://farside.ph.utexas.edu/teaching/em/lectures/node9.html
> >
> > Irrelevant. You are not asking a vector calculus problem.
> >
> > You are asking a problem that has no solution with valid mathematics
> > because the starting assumption is invalid.
> >
> > Area is not a vector - area is a SCALAR. Area of a rectangle is defined
> > as the magnitude of the two vectors that form the sides of the
> > rectangle.
> >
> > Which, unsurprisingly, IS NOT A VECTOR.
>
> Go ask your teacher, I will not give you free e-tutoring any more.

You are under the mistaken impression that you have anything worth
teaching.

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